Euler rotation of direction vector

Posted by Tom Savage on Stack Overflow See other posts from Stack Overflow or by Tom Savage
Published on 2010-05-29T20:16:20Z Indexed on 2010/05/29 20:22 UTC
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3d

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vector

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rotation

I have defined an object in 3D space with position, rotation and scale values (all defined as 3D vectors). It also has upwards and forwards direction vectors. When I rotate the object, I need these direction vectors to rotate with it.

Assuming my up vector is (0, 1, 0) and my forwards vector is (0, 0, 1) at zero rotation, how might I achieve this?

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